1. Patent US4041476-Method, medium and apparatus for producing three-dimensional figure product—Google patents [Internet]. Available from: https://www.google.com/patents/US4041476.
2. Solid freeform fabrication: a new direction in manufacturing: with research and applications in thermal laser processing [Internet]. Illustrated;Beaman,2013
3. History of additive manufacturing;Wohlers,2014
4. Solid freeform fabrication: a new direction in manufacturing;Beaman,1997
5. Automatic method for fabricating a three-dimensional plastic model with photo-hardening polymer;Kodama;Rev Sci Instrum,1981